Coaches without starting exercises (4)
I believe the answer is:
uses
'exercises' is the definition.
(to exercise something can mean to use it)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for uses that I've seen before include "Purposes; consumes" , "Puts to a particular purpose" , "deployments" , "manipulates" , "Functions, applications" .)